Spheres of the Earth

Front

What are the four spheres of the Earth?

Back

The four spheres of the Earth are the atmosphere (air), hydrosphere (water), biosphere (living things), and geosphere (land).

Front

What does the term 'biosphere' refer to?

Back

The biosphere refers to the regions of the Earth that are inhabited by living organisms, including land, water, and the atmosphere.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding the Earth, essential for life as it provides oxygen and protects from harmful solar radiation.

Front

What does 'geo-' mean?

Back

The prefix 'geo-' comes from the Greek word for 'ground' or 'earth'.

Front

What does 'atmo-' mean?

Back

The prefix 'atmo-' comes from the Greek word for 'air'.

Front

How do the biosphere and geosphere interact?

Back

The biosphere interacts with the geosphere when living organisms, such as plants, decompose and enrich the soil.

Front

What is the hydrosphere?

Back

The hydrosphere encompasses all the water on Earth, including oceans, rivers, lakes, and groundwater.

Front

What is an example of the interaction between the atmosphere and hydrosphere?

Back

An example is evaporation, where water from oceans and lakes turns into vapor and enters the atmosphere.

Front

What role does the geosphere play in the ecosystem?

Back

The geosphere provides the physical foundation for ecosystems, including soil for plants and minerals for organisms.

Front

What is the significance of the atmosphere for living organisms?

Back

The atmosphere is crucial for living organisms as it provides oxygen for respiration and carbon dioxide for photosynthesis.